1comptime {
 2    const undef: i64 = undefined;
 3    const not_undef: i64 = 32;
 4
 5    // If either of the operands are zero, then the other operand is returned.
 6    @compileLog(undef +| 0);
 7    @compileLog(not_undef +| 0);
 8    @compileLog(0 +| undef);
 9    @compileLog(0 +| not_undef);
10    // If either of the operands are undefined, the result is undefined.
11    @compileLog(undef +| 1);
12    @compileLog(not_undef +| 1);
13    @compileLog(1 +| undef);
14    @compileLog(1 +| not_undef);
15}
16
17// error
18//
19// :6:5: error: found compile log statement
20//
21// Compile Log Output:
22// @as(i64, undefined)
23// @as(i64, 32)
24// @as(i64, undefined)
25// @as(i64, 32)
26// @as(i64, undefined)
27// @as(i64, 33)
28// @as(i64, undefined)
29// @as(i64, 33)